Valve



Aug. 4, 1.4925. e l' 1,548,018

Y l l R. c. ANGELI.

l vALvn Filed Apm s, i920 www Patented Aug. 4, 1925i.

UNITED STAT-ias PATENT OFFICE.,

ROBERT C. ANGELL, OF BROOKLYN, NEW YORK, AS'SIGNOR TO THE S. S. WHITEDENTAL MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

VALVE.

Application 1ed`Apri1- 5, 1920. Serial No. 371,363.

To all whom t may concern: f

Be it known that I, ROBERT C. ANGEL@ a citizen of the United States, anda resi-I dent of Brooklyn, in the county of Kings,`

State of New York, have invented vcertain new and useful Improvements inValves,"of which the following is a specification, reference being hadto the accompanying drawings. c f

My invention relates particularly torrhigh pressure valves, and isespecially directedl tovalves designed to be employed in connection withportable gas cylinders, such as are commonly used for carrying anddispensing nitrous oxridy or oxygen4 gasesfor various uses. y f

In valves of the type contemplated, it, has been diflicult to preventleakage of the gas around the valve-stem, particularly when closing thepassageway leading froin the cylinder outlet, as the axial movement ofthe valve-plug tends to effect a similar axial movement of thevalve-stein by reason of their frictional engagement. Y Y

The principal object of my invention is i to provide a valve with a stemhaving means Y which is axially movable with respect to' that tends toprevent leakage when the plug is actuated to open or close the let.

Other objects of my invention are to provide a valve with a stem formedof sectional members which are of simple construction, readily assembledand replaced,` and which areV so constructed and arranged as to tend toelongate said stem when actuated to close said valve. i i

The form of my invention as hereinafter described', coinprehends a valvehaving a threaded valve-plug actuated by a valvestem through aninterposed connectingshoe,

cylinder outbothV said valve-plug and valve-stem and which has inclinedsurfacesengaging similarly inclined surfaces on saidy stem, co'

operativey to effect the. sealing of the aper.

turethrough whichsaid valve-stem extends,

by thrusting said` valve-stein axially against its seat. f

My invention also includes all ofthe variousl novel features ofconstruction and arrangement l as hereinafter more `definitelyspecified..y Y l Y In'V the accompanying drawings, Figure 1 is. acentra-l vertical sectional view taken vaxiallythrough a valveconstructed Vin actration; Fig. 2 is a! perspective view of the outersection of the valve-stem; Fig. 3 is a perspective view ofthe innersection or shoe of thevalve-stem; and Fig. 4L is a sectional perspectiveview of the seat washer which cooperates with the valve-stem to seal theaperturethroughwhich said valve-stem extends.'v i

In said figures,' the valve-body 1 has its threaded nipple "2f engagedwith the neck 3 of a gas'cylinder 41, land is provided with the gland 5.in threaded engagement with the valve-body 1, arranged to compress thewasher 6, *preferably formed of rubber, against the shoulder 7 in thechamber 8 of said valve-body 1 to form a seat for the valve-stem 9.

The valve-body 1 is provided with a passageway 10, leading to the gascylinder 4, and having the outlet 11 between which is interposed thevalve-seat block 12, having the seat 13 for the valve-plug 15, which isin threaded engagement with the threaded walls of the chamber 8.

The valve-plug 15 is arranged to be rotated to open and close thepassageway 10, by the valve-stem 9, which extends through a suitablyformed` aperturev in the gland 5, and which includes "the shoe 20,'having the squared extension 21 projecting into a similarly squaredrecess 22 in said valve-plug 15. y Pressure upon the valve-plug 15 maybe equalized by providing said recess 22 with ak duct 23 which isarranged to communicate with the passageway 10` when said valveplug 15is initsopen positi0n.

The valve-stein'9 may be conveniently Vro- .I

tion 26 extending from said valve-stem beyond the gland The valve-stem 9is provided with the lia-nge 27 disposed Within the chamber S, and hasits conical outer surface 29 arranged to engage the seat formed by theWasher 6. The inner surface ot' said flange 27 is provided with adiametrial groove 30, having its lateral Walls 31 inclined with respectto each other, and to the axis ot said stem, andis arranged to abutagainst the shoe Q0, having the outer surface of its flange 34 providedWith the spline projecting' into said groove 80, and having its lateralvvallssimilarly inclined, and so cooperatively related with the Walls 3las tofieiectsthe axial with the axis ot rotation and thereby-force thestem into intimate contact with the seat formed by therubbervvasher 6,tol seal the joint between said stemand gland, thus preventing leakagethrough the aperture through which said valve-stem extends.

Althoughl have described the `valve-stem 9 as having the shoe 20providing means forming an extension connecting the valve- Cil stem Withthe valve-plug, it is to be understood that, said shoe 2O is socorrelated With said valve-stein 9 as to in eii'ect Jormfthere- With acompound or `sectional valve-stem which is capable ot axial expansion orelonf gation.

lt may he herenoted that the tapered surfaces between the valve-stem 9and shoe. 2O may be variously modified toeect the result desired, torinstance,xconical pins and similarly shaped apertures may be readilysubstituted, and, therefore, I do not desire to limit `myinvention tothe` precise details ot construction and arrangement as hereinsetrtortlnas it is obvious thatvarious modi# cations may be made'thereinWit-hout de parting fromthe essential features ot my' invention asdeiined in the i appended claims.

Having thus describedl my invention,i I cla-im:-

l. 'A valve comprising a valve-plug, and a sectionalv valve-stemyarranged to` actuate said valve-plug; and having means: effected by therotation of said valve-stem'tending to axially thrust one of saidsections from the valveeplug. Y

2. A valve comprising a threaded valveplug, and a sectional valve-stemarranged to rotate said valve-plug and having means cooperativetherewith and etlected by the rotation of said valve-stem, tending toaxially thrust one of said sections from the valve-plug. A

3. A valve comprising a body having a chamber, a. threaded valve-plug insaid chamber, and a sectional .valvestem arranged to rotate saidvalve-plug, said sections being rotatable one by the other, and havingmeans arranged to axially separate said sections When the valve-stem isrotated, and-means'tending to axially thrust them from the valve-pluv.

4. A valve comprising :a body having'a chamber, a threaded valvefplug4in said chamber, and. a sectional .valvestemV arranged to rotate; saidvalve-plug, said sections; beingrotatable, oneby the other, and havingmeans toV axially separatethe valve@ stem sections `When the valyeistemis operated.

5. A valve comprising a body having a chamber, a threaded valve-plug insaid chamber, and a sectional valve-stem arranged.toprotatefsaidvalve-plug, said sections being rotatablefone-,by the other, and havingcooperatively engaged ,inclinedxsuracestendingeyto axiallyy thrust itssections apart when actuated to rotate Vsaid valveplugu` 6. A., valve.comprising` a body having a chamber,;a valve-.plug in .threaded engage-lment-With the ,walls oi' said chamber, anda sectional Avalve-stemarranged to'rotate said valve-plug, said sections :being rotatable, oneby the, other, and respectively lprovided with a groove anda spline,having oppositely-inclined Walls cooperative With eachother to eil'ect1the axial; separationot'said .sections when actuated toxrotate saidvalvefplug.

7. A valve comprising a body having a chamber, a valve-plug in threadedengage'F ment .with the Wallsiot said chamber, a valve stem connected tosaidy valveplug for rotatingsaid `plug and vhaving means cooperativetherewith and with theconnec tionibetiveenlthe valvefstenr and plugtend-v ing; -to axiallyv thrust the Y valve-stem Jfrom the valve-plugonly When said plug isro-` tatedfand a springin said chambertending l tothrust said valve-stem awayl `from said i :valve-plug.

8.'.A-valve comprising-a body having a chamber, a valve-plug inthreadedengagement .with the Walls of said chamber, a valve-stemconnected tor said valve-plug'dor rotating said plug and having meanscooperative therewith and with the connection between-the .valve-stemand plug tending tto axially .thrust the valve-stein 'from the'valve-plug only when said plug is rotated,

and yielding means tending to thrust said valve-stem axially away fromsaid valveplug.

9. A valve comprising a body having a chamber, a threaded valve-plug insaid chamber, a sectional valve-stem rotatable as a Whole to eeot therotation of said valveplug and comprising an inner section and an outersection respectively having ool" operatively inclined surfaces tendingto Separate said sections axially, When rotated under tension and havinga longitudinally slidable connection With said plug.

In Witness whereof, I have hereunto set my hand this 31st day of March,A. D., 1920.

ROBERT C. ANGELL.

Witnesses GEORGE H. BROWNE, OLIVE M. HITCHCOCK.

